William f



W. F. BERETH.

SPRING SEAT.

APPLICATION FILED NOV. 30. ms.

1 1 93,977. Patented Aug. 8-, 1916.

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UNITED STATES PATENT QFFIGEJ WILLIAM F. BERETH, 0F MONMOUTI-I, ILLINOIS, ASSIGNOR TO MONMOUTH PLOW FACTORY, OF MONMOUTI-I, ILLINOIS, A CORPORATION OF ILLINOIS.

SPRING-SEAT.

Application filed November 30, 1915.

T 0 all whom it may concern:

Be it known that I, VILLIAM F. Bnnn'rn, a citizen of the United States, and a resident of Monmouth, in the county of VVZLIIGII and State of Illinois, have invented a new and useful Spring-Seat, of which the following is a specification.

My present invention relates to that general class or type of seats commonly used on agricultural implements.

The principal object of the invention is to generally improve the construction and increase the velliciency of seats of this character, the improvements being directed more particularly toward providing for the ease and comfort of the user and toward preventing extreme vibratory movements of the seat proper, which extreme movements tend to throw the driver from his seat. In this connection it is an object to provide a device which under ordinary conditions and circumstances utilizes only the usual spring or seat-supporting plate, but in which an auxiliary spring operates when extremely rough ground or other obstruction is encountered. It is therefore an object to dispense with coil-springs or any other additional element which will come into full action when the implement is working under normal conditions and when the seat-spring proper is not under abnormal strain.

To provide novel means foreliminating danger of breaking the seat-spring properwhich, especially if used on a disk-harrow or the like, would perhaps result disastrously to the driver-constitutes a further object.

To provide novelly combined elements which will automatically accommodate themselves to drivers-varying greatly in weight, constitutes another object.

To provide a main and an auxiliary seat bar cooperating in such manner that their combined action is substantially that of a leaf-spring, constitutes a further ob- 'ect. 1 That the elements constituting the means for carrying out the above recited objects be durable, strong and simple is a prime requisite, and to provide such means constitutes still another object.

Minor objects will presently appear.

The invention consists, substantially, in the improvements hereinafter noted.

By way of example a spring-seat con- Specification of Letters Patent.

Patented A11 8, 1916.

Serial N 0. 64,268.

structed according to this invention is hereinafter described with reference to the ac companying drawings, in which:

Figure l is a side elevation of the device attached to the tongue of an implement, the full lines showing the seat in normal or still position, and the lower dotted lines showing it in depressed position, as when the implement has encountered an obstruction, or when passing over rough and uneven ground; Fig. 2, anenlarged fragmental detail, partly in side elevation and partly in section; Fig. 2 a modification, similar to Fig. 2; Fig. 3, another modification, partly in elevation and partly in section; and Fig. 4, a top plan.

Considering the drawings in detail and indicating each element and, where necessary, each part thereof, by a distinguishing reference character, 2 indicates an implement tongue to which is secured by bolts 3 and nuts 4 a spring seat-supporting leaf like bar 5 the body portion of which is angularly inclined with reference to the tongue and the upper and lower ends of which are bent in the usual manner whereby to support the seat 6 and to secure the bar to the tongue or other part of the implement.

7 7 designate the bolts and 8, 8 the nuts whereby the seat is secured to said bar.

The elements hereinbefore described are well known in the art.

9 designates an auxiliary spring-seat leaflike bar having in its bent lower end an aperture through which the forward bolt 3 passes, the aperture being of such size as to snugly receive said bolt. The upper end of the bar 9 is provided with a longitudinally arranged slot 10 through which passes the stem 11 of a bolt 11 the constricted and threaded terminal 11 of which passes through an aperture in the bar 5, fitting snugly into said aperture.

The annular shoulder provided by the foot of the stem 11" and the terminal 11 rests on the bar 5, in order that the securing nut 13 may be drawn taut without drawing the bolt head so tightly down upon the bar 9 as to prevent free movement of said parts relative to each other.

In Fig. 2 I have shown a bar 5 as provided with a slot 10. The stem of the bolt 11 seats snugly in an aperture in the bar 9 and is adapted to move in said slot 10 when weight is placed upon the seat 6.

Copies of this patent may be obtained for In Fig. 3 I have shown the main bar 5" as curved somewhat differently from those shown in the otherviews, and have shown the slot 10 as in the lower endportion of the auxiliary bar 9, whereby the lower end of the bar 9' may move on the bolt 11 and relatively to the bar 5. The upper portions of the bars shown in this figure are practically immovably united by the bolt or rivet 15.

l/Vhen the implement is traversing a field there will be a constant oscillation of the seat, due to the slight irregularities of the ground, and the bars 5 and 9 will yield relative to each other, after the fashion of a leaf-spring, the stem 11" of the bolt mov ing in the slot 10 or said slot moving relatively to said bolt, as the case may be. The bars 5 and 9 may be of lighter material than when a single spring is 'used, whereby a much more flexible and resilient action is attained. Moreover, a driver who is of light weight will ride as freely as will one of much greater weight, due to the leaf-springlike or sliding action of the bars'5 and 9. No matter what be the weight of the driver the oscillations of the seat will not be abnormal, for such tendency is resisted by the auxiliary bar 9, which during the down ward movement will arch or bow in the position indicated by dotted lines in Fig. 1. It is practically impossible for the bar 5 to be bro-ken by reason of great weight and sudden shock, for a shock of this nature is resisted and prevented by the spring 9, which thus acts as a shock-absorber. There will be no tendency to throw the driver from his seat because of a sudden rebound, for the reason just described. 7

The action of the devices shown in Figs. 2 and 3 will, from the foregoing description, be obvious.

In the foregoing specification I have referred to some modifications which might be adopted in the practice of the invention,

but have not endeavored to specify all, the object of this specification being to instruct persons skilled in the art to understand the nature of the invention, and I desire it to be understood that specific disclosure by me of some modifications is by no means intended to exclude others not referred to but which are within the spirit and scope of the invention.

I claim as my invention the following, towit:

1. A seat-support comprising a seat-supporting spring, and an auxiliary spring slidably connected thereto and in such manr 3. The combination with a horizontally arranged and relatively fixed support, of a seat-supporting spring having its lower end parallel therewith and its body portion divergent therefrom, a bolt, as 4:, for securing the rear end of said parallel portion to the support, an auxiliary spring having its forward portion parallel with the supportparalleling'portion of the seat-spring and its body portion divergent from said support but at a less degree of divergencythan is the body portion of the seat-supporting spring, a bolt securing said parallel portions to each other and to said support, and means for slidably securing the body portions of said springs to eachother.

In testimony whereof I hereto afiix my signature this 18th day of November, 1915.

'WILLIAM F. BERETH.

five cents each, by addressing the Commissioner of Patents. Washington, 1). 0. 7 

